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Finding the Fourth Proportional to 339,304.80, 508,957.20 and 286,816.80

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Solution

The fourth proportional to 339,304.80, 508,957.20 and 286,816.80 is: 430,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,304.80 : 508,957.20 = 286,816.80 : x
  2. Step 2: Convert to fraction form
    339,304.80/508,957.20 = 286,816.80/x
  3. Step 3: Cross multiply
    339,304.80x = 508,957.20 × 286,816.80
  4. Step 4: Simplify right side
    339,304.80x = 145,977,475,440.96
  5. Step 5: Solve for x
    x = 145,977,475,440.96/339,304.80
  6. Step 6: Final answer
    x = 430,225.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.